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Problem Statement: This knowledge base article contains a sample query that activates an Aspen Calc calculation. | Solution: This query activates the Aspen Calc calculation named TotalRawMaterials.
local CalcCmd;
local CalcObj;
CalcCmd=createobject('CalcScheduler.CalcCommands');
CalcObj=CalcCmd.GetCalculationObject('TotalRawMaterials');
CalcCmd.CalcExecute(CalcObj);
Keywords: query
sample
example
Aspen Calc
execute
calculation
Re... |
Problem Statement: How to run an Aspen Calc calculation from VB (Visual Basic)? | Solution: Aspen Calc has a COM object that the user interface uses to manage and execute calculations. Unfortunately, Aspen does not have user documentation for this COM object at this time.
The following code executes a calculation from Visual Basic.
Dim calccmd As Object
Dim calc As Object
Set calccmd = CreateObjec... |
Problem Statement: One of the integral features of the Aspen InfoPlus-X layered product is the ability to calculate averages and store them in history for each tag.
You can set it up with up to 6 different Averaging Periods such as 12 Minute, 1 Hour, 4 Hours, 1 Shift, 1 Day, 1 Month
Then at regular intervals, an extern... | Solution: The first thing to check is a database record called Ip_Act_Avrg which has four fields(including the 'Name' field).
IP_EXTERNAL_TASK should be set to TSK_AVRG
IP_RESCHEDULE_INTVL should be set to a value equal to or lower than the 'minimum' averaging period. As per the example above that would be 12 minutes o... |
Problem Statement: How to report reaction rate for the kinetic reactors RCSTR, RPLUG, and RBATCH? | Solution: Prior to V12, it was not possible to see the reaction rates in the user interface on any of the results forms.
However, if the Diagnostics for the Simulation of the block were turned up to 6 or higher on the Block Options of the Reactor, the rates would be reported in the History file in SI units.
Using a v... |
Problem Statement: How to calculate the checksum on the media that has been downloaded from the Aspentech web support site or the aspenONE Download Center. | Solution: In order to checksum one file, such as an ISO file, use the certutil command. Let’s assume you’ve download an ISO file into c:\temp, enter the following DOS command in that directory:
certutil -hashfile <iso file> MD5
For example: certutil -hashfile V12-ENG.iso MD5
MD5 hash of file Aspen-V14-ENG... |
Problem Statement: How do I solve issues where the RabbitMQ endpoints are not reachable, affecting Aspen Mtell Alert Manager (MAM) functionality?
It is often necessary to make sure the RabbitMQ service is working correctly when dealing with Aspen MAM, many different errors referencing Aspen MAM services will show lett... | Solution: 1. Open Windows Services Console and make sure the RabbitMQ service is running
2. Open CMD using Run as Administrator
3. Go to folder “C:\Program Files\RabbitMQ Server\rabbitmq_server-3.8.2\sbin”, depending on RabbitMQ version final part of path may change (e.g. 3.8.1 instead of 3.8.2)
4. Execute command “ra... |
Problem Statement: Is it possible to specify the Cv value and determine the pressure drop across the control valve? | Solution: If you are able to obtain or estimate the Cv of the meter then you can specify this Cv value in a control valve in HYSYS from the Rating/Sizing tab.
In the valve Design/Parameters page there is a check box - Use sizing methods to calculate Delta P. The valve can calculate pressure drop with specified Cv even... |
Problem Statement: How to get rid off the following message “Utility Hydrate Formation-1 is not available with the property package being used” in Aspen HYSYS? | Solution: In order to avoid the following message from appearing while selecting the Hydrate Utility:
You will need to select a property package from the HYSYS databank in order for the Hydrate Utility to work. Aspen Properties databank is not linked to the utility.
Keywords: Hydrate Utility, Databank, Aspen HYSYS
Ref... |
Problem Statement: From the Column Design ribbon, in the Column Analyzer group, the Export to Vendor option is greyed out, why? | Solution: The user can export results from the column analyzer to vendor packages to confirm and validate the results. However, this option is only available if column internals configurations are being analyzed within the column.
Once the column internals are added to the configuration, the Export to Vendor option wi... |
Problem Statement: Auto Add button generates an error message in Aspen Calc when using MS EXCEL to create a calculation.
Consider the following scenario:
1. Open Aspen Calc
2. Right-click the server node and select New Calculation from the context menu
3. Input a calculation into the Wizard1 and click Next
4. Click '... | Solution: To resolve the error, you must change the identity of the Excel application to interactive user (see below). This setting is found in the DCOM Config. To get there proceed as follows:
Open Component Services | Computers | My Computer | DCOM Config
Expand DCOM Config and search for Microsoft Excel Application
... |
Problem Statement: Aspen Watch keeps the history of the DMC3 parameters in the Attribute field. When the user launches the history plot from the PCWS it selects a predefined list. For CVs it shows measurement (DEP), Steady State Target (SSDEP), Model Prediction (PRDMDLD), Operator High limit (UDEPTG) and Operator Low l... | Solution: You can add additional trends in the history view by searching the tag in the top left section. The tag format on Aspen Watch follows:
CXXY_VAR
XX: Controller ID in Aspen Watch
Y: (I) Independent or (D) Dependent
VAR: Variable name in DMC3 controller
For example, I want to add the HD_FLOWSP independent meas... |
Problem Statement: DMC3 RTE controller cannot write the value to the DCS. But there are no write error messages on the PCWS and CIMIO_MSG.log.
However, the Test API and PCWS can write the value to DCS.
What is the root cause of this issue? | Solution: If you use the “Boolean” IO Datatype for some DCS binding entries, you may see this problem.
This can cause the controller’s internal error and this can cause no write error from Controller to DCS without write error message.
If you see this kind of this issue, please use the “Integer” IO Data type instead of... |
Problem Statement: This | Solution: frames some reasons behind and MV or CV variable stuck at Setpoint combine status and some ways to solve the problem
Solution
The combined status Setpoint can be achieved for and MV or CV when both the Low Limit and the High Limit are pinched at the same value. In this case, the controller will calculate a SS... |
Problem Statement: The MES Legacy Add-In can be used with the Tag Browser or you can enter manually the name of a single tag in the Tags field of every Dialog Box. However, it is not possible to enter several names of tags or drag and drop them from the Tag Browser. into that field. | Solution: 1. Type the names of the tags that will be entered in separated cells:
2. Click on the Process Data Button and select the desired function. (Current Values en this example):
3. Position the cursor in the data entry field or click on the _ icon:
4. Select the cells that contain the names of the tags:
5. Cli... |
Problem Statement: From V11, AspenONE Process Explorer was including as the primary tool to display HTP plots from AspenWatch on PCWS. However, some problems could happen as difficulties to access the tool or error as Unable to acquire SLM_RN_ALL_ASPENONEPCXP”. However, PCWS offers different options for plotting the AW... | Solution: The three types of plots that PCWS can be use are:
AspenONE Process Explorer – This type of plot is used as the main engine of the Process Explorer technology which is one of the main Data explorer and trending tools from IP21. This tool requires the SLM_RN_ALL_ASPENONEPCXP to work, and if the key is missing... |
Problem Statement: SMBv1 (or SMB1) was the first version of the popular SMB/CIFS file-sharing network protocol. There have been a couple of different versions of SMB/CIFS over the years. Most predominant nowadays is the SMB2 version (and in many organizations now the SMB3 version). SMB1 has developed nearly 30 years ag... | Solution: , we will describe the relationship between APC software and SMBv1.
Solution
APC software does not use SMBv1 for any of the servers (DMC, Web, or AspenWAtch) and it can be disabled as recommended by Microsoft without affecting the APC or DMC applications.
As mentioned previously SMBv1 is an old version of th... |
Problem Statement: This | Solution: frames a couple of points to check when there is a connection problem (or suspect a connection problem) between Online Server and AspenWatch Server
Solution
1.- The messages display on AW Maker Run Status can give a few hints about a further problem. some of them can include:
Not Licensed: This problem can o... |
Problem Statement: How can I design a heat exchanger using Aspen HYSYS? | Solution: The Aspen HYSYS Heat Exchanger unit operation contains several different models to simulate a heat exchanger:
1. There are 2 simple 'Exchanger Design' models, 'End Point' and 'Weighted', in which UA and pressure drop can either be specified or calculated based on process conditions (see the Operations G... |
Problem Statement: The collect documentation says that you can use -1 for description length and engineering units length.
This is not the case. It generates an invalid CIM-IO message. | Solution: Users must specify a positive number for the eng-units and desc result length in the collect input file.
Also See the Cim-IO to OPC User Guide that corresponds with the version of the Cim-IO for OPC software you are using. Since the Cim-IO for OPC interface does not support Smart Data Types, it is necessary t... |
Problem Statement: Information for running DMCplus on the Honeywell AppNode | Solution: Tips and Tricks for the Honeywell App node
I. Honeywell Software
NOTE: Much of this information in this section is a compilation of our observations. It is really Honeywell's responsibility to set up and support this software covered in this section. Some of the following information may not be totally... |
Problem Statement: What can cause the error do retry when using the Aspen InfoPlus.21 (IP.21) Administrator from a client computer? | Solution: Verify that a firewall does not block communications between the client computer and the Aspen InfoPlus.21 server, see How do I make the Aspen InfoPlus.21 Administrator connect through a firewall?
Verify that Data Execution Prevention is set to essential Windows programs and services only.
If using Symantec... |
Problem Statement: I am working with a text file that I need to add lines into and delete lines from. It is being used as an external table, one that an SQLplus script AND a user can update. In SQLplus, I can easily add a line at the bottom with SET APPEND. However, I need to delete the first line in the file when c... | Solution: One way to delete a line from a file is to select from the file and exclude the line with a WHERE condition. You can direct the output to a file with SET OUTPUT. You need a SYSTEM command to replace the old file with the new one. E.g.:
set output 'c:\t1.txt'; -- Open temporary file
write line from 'c:\t.t... |
Problem Statement: How to set up a dynamic simulation of a pressurized propane tank with heat loss due to the environment? | Solution: In the following video, it is shown step by step how to setup both the steady and dynamic state for a simulation with the former characteristics.
In the attachment, you can find the starter files, an .hsc for V11 and upwards, and an .XML file for earlier versions.
Keywords: Propane, Dynamic, Pressurized, Ta... |
Problem Statement: How can I set up a deadband for my PID controller, so that the controller acts to maintain a range and not a single setpoint? | Solution: The steps are shown in the following video:
Keywords: Deadband, HYSYS, Dynamics, PID, Controller, Parameter, Scheduler
References: None |
Problem Statement: Aspen Plus crashes when I try to save a .bkp file from an .apwz file. | Solution: The following video shows the steps to extract a .bkp file from an .apwz file in V12.1
Keywords: bkp, apwz, save, crash, file, plus
References: None |
Problem Statement: Aspen Plus Hangs When Opening File on Loading Simulation Engine or get the error Unable to load simulation Engine. Probable cause: insufficient disk space or memory. | Solution: This can occur when there are multiple Fortran run time libraries on the machine.
This can happen when other versions of the Fortran runtime libraries are installed from another application.
To check where the run time libraries are located:
Open a cmd window with admin rights.
Type where libifcoremd.dll to ... |
Problem Statement: It is possible to manually delete history values in GDOThistory table of the GDOTOnlineHistory or GDOTSimulationHistory database running a query in SLQ Management Studio. | Solution: Here is a procedure to manually trim the database.
This query will get you the oldest timestamp:
SELECT TStamp FROM GDOThistory WHERE TStamp = (SELECT MIN(TStamp) FROM GDOThistory)
That is the oldest time in the data base - units are the number of milliseconds since 1970-01-01.
Divide by 1000 and you get th... |
Problem Statement: In aspenONE Process Explorer tag values may not appear on a plot and the current value might show a series of three asterisks ( *** ) instead of the value. What might cause this situation? | Solution: The quality status that accompanies the tag value and timestamp gets translated to an appropriate quality level via a special record in the Aspen InfoPlus.21 database called 'QUALITY-STATUSES'. If the quality status results in a quality level which is Bad then Bad values will not be plotted and three asteris... |
Problem Statement: How to define the default text properties for labels in ABE Graphics Definer? | Solution: Start the Graphics Definer from the Start menu | All Programs | Aspen Basic Engineering | Graphics Definer - ABE, and the window in the image below will appear.
You will need to connect to a workspace to be able to use all the tools. Connect to the workspace.
At this stage, it would be convenient to define t... |
Problem Statement: How to add radio buttons option in a datasheet template in ABE datasheet definer? | Solution: Radio buttons in a datasheet allow users to select one among a set of options. All radio buttons in a group are linked to a single attribute in the class view that has a set of defined enumerations.
Select cell in the datasheet, where you want to add radio buttons and click on the Radio button option from the... |
Problem Statement: Do we have any example of boiler in Aspen Utilities Planner to find the efficiency of boiler? | Solution: Attached Boiler_Losses.auf case is an example of modeling boiler in AUP V12. In V12, significant enhancement is made by
Incorporating water evaporation losses into boiler efficiency calculation
Calculating the air specific heat capacity based on the condition and composition, instead of constant value.
In th... |
Problem Statement: Aspen Shell & Tube Exchanger – unable to export TEMA Sheet in Excel | Solution: Some time user may fine that, user is unable to export the TEMA sheet in Excel template, when user click on the Export button (applicable for both options “default template or specified template”), user can see below Exporting dialog & suddenly EDR file get closed.
Please make sure that the Excel Templates ... |
Problem Statement: How to add or Modify floating roof tanks in Aspen Operations Reconciliation and Accounting. | Solution: Click Configure | Vessels | Tanks to open the Tank Listing box
or
Click on the icon is Add mode on the diagram to add a tank as below. Click and then double-click the physical representation of the tank in the Diagram window.
The following window will open, Containing 3 tabs, general, details and advanced.
Fi... |
Problem Statement: –
How to resolve below error while launching Aspen Unified PIMS (AUP)? | Solution: -
Whenever the above error pops-up after launching Aspen Unified PIMS, we need to look into below folder
1. Open the “AspenUnified” folder located at –
“C:\ProgramData\AspenTech\AspenUnified”
2. Delete the above folder
3. Reinstall Aspen Unified PIMS package again.
4. Launch Aspen Unified PIMS agai... |
Problem Statement: -
What does the numbers in CRDDISTL table indicate under Estimated (EST) Charge Rows? | Solution: -
The numbers indicated under distillation units as estimated charge are the estimated charge for the crude (row) to the distillation model (column). The value has to be non-zero for the crude to be fed to the mode and the value itself is used to calculate initial yields property values for all the cuts produ... |
Problem Statement: AI Training feature in Aspen Plus/Hysys V12.1 is not able to start. An error such as access socket forbidden or refuse connection appears. These errors may also appear when the user attempts to run a case file that is having an AI Training block in the flowsheet. | Solution: AI Training is similar to the Plant Data feature which also using Aspen Online Service as the backbone to use plant data and data validation features before use those data for AI training purposes.
The above errors are the errors due to the Aspen Online Service V12.1.
One of the workaround to resolve these... |
Problem Statement: When working with the product Aspen Production Record Manager Extractor one of the steps involved is to create the Aspen Extractor Configuration database. The question may arise - should a brand new database be created for this purpose or can the appropriate database objects be created in the existi... | Solution: A new database should be used. The main reason is that the Extractor database is different from the APRM database. The tables in each are different and are used by their own applications and the information is not shared.
Keywords: None
References: None |
Problem Statement: Sometimes when troubleshooting an issue in ABE, it's necessary to report all messages in the Journal.log file located in the workspace folder. | Solution: Find out which Library Set is being used in the current workspace by going to the workspace folder and checking in the workspace.cfg
Delete or change the name of the old Journal.log
3. Navigate to the WorkspaceLibraries folder, open LibrarySets.lst, and find the .cfg file associated with the L... |
Problem Statement: When using Cim-IO Test API utility, it consists of a series of prompt which requires the user to input manually. However, if one want to run it through a batch file, this will require the inputs to be read in by the Cim-IO Test API. | Solution: It is possible to pass in the inputs to Cim-IO Test API utility by having the inputs in a file. Cim-IO Test API utility does not have the functionality to read the inputs from a file. However, by making use of redirection in command prompt.
By following the knowledge based article titled Proper way of using t... |
Problem Statement: How is Reid Vapor Pressure [RVP] calculated in Aspen HYSYS? | Solution: Aspen HYSYS flashes the vapor at 100F till the vapor to liquid volume ratio is 4:1. The pressure at 100F is adjusted by iteratively flashing until the vapour:liquid ratio by volume is 4:1.
It is possible to use several other RVP calculation methods. Either by adding the additional property correlations to th... |
Problem Statement: How do I resolve Error saving configuration of HTTP Server: The system cannot find the path specified? | Solution: When saving the configuration on the Auto Upload Tool, an incorrect path in the FeatureXMLDoc.XML file will lead to this error message highlighted in yellow.
The error occurs because there is an incorrect path in the configuration XML file.
To resolve this, navigate to C:\Program Files (x86)\AspenTech\ALC... |
Problem Statement: While in Calibrate mode for a DMCplus or DMC3 controller, there are messages in the PCWS indicating auto-paired moves. However, in the Controller Details page, the STAUTOPAIR (Enable Auto-Pairing) entry is set to NO (Off). Is this feature always active? | Solution: As of V10 CP2 and V11, the upgraded version of Calibrate is called Calibrate 2.0, which includes some more advanced features. One of these features is that Auto Pairing is now a default behavior so it is always active. Here is an excerpt from our APC250 training course:
If the controller is stuck in a corner... |
Problem Statement: When I was using a different computer my Projects and Scenarios displayed in the Palette View were sorted alphabetically. Now, my Scenarios are displayed in the order they were created. Can I sort my Projects and Scenarios alphabetically or by date? | Solution: There is no way to sort Projects and Scenarios from the Aspen Capital Cost Estimator user interface since this order depends on how Windows file types where specified. With the NTFS file system and CDFS file systems, the names are usually returned in alphabetical order. With FAT file systems, the names are us... |
Problem Statement: How do I prevent repeat area fields of an Aspen Cim-IO transfer record from having a status of Io_Data_Status = BadA and Io_Data_Status_Desc = Configuration Error? | Solution: KB Article 116004 (What is the maximum number of tags that can be added to a transfer record?) defines that the Number of Character limits for the io_tagname field are 39, 79 or 255 with Regular, Long, or LongLong transfer records respectively.
However when you type into the io_tagame you will find that you c... |
Problem Statement: Is it possible to model methanol synthesis in Aspen Plus? | Solution: Attached is an example of this process. This example will run in Aspen Plus V11 and higher.
These files were shipped with Aspen Plus V11 and higher and are located in the following directory:
C:\Program Files\AspenTech\Aspen Plus Vxx.x\GUI\Examples\Bulk Chemical\Methanol
The files for V11, V12, and V12.1 use... |
Problem Statement: How to edit custom definition record to avoid A1PE error “404- File or directory not found” shown for Tag details for tags defined by custom definition record?
In a1Pe, for tags defined by custom definition record, error “404-File or directory not found” error may be encountered when trying to view T... | Solution: The DETAIL_DISPLAY_REC attribute within the IP_DiscreteDef definition record defines Tag Details page. ipdscret is the default name for IP_DiscreteDef. It is possible to plug other ASP implementations for Tag Details based on the tag's definition record. If the value of the DETAIL_DISPLAY_REC is different fro... |
Problem Statement: –
What is functionality in operation difference of “*” (Asterisk) & “DISABLE” column in Aspen PIMS. | Solution: –
Purpose -
1. Using “*” (Asterisk symbol) in rows in Aspen PIMS data tables will terminate particular row and will not be considered during model run.
2. Using “DISABLE” column (user defined column) PIMS data tables and entering “1” as a coefficient for any row (component) will entirely remove all the struc... |
Problem Statement: -
Why does PIMSWIN.exe – Application error occurs during installation and how can we fix it? | Solution: -
This error might appears due to the missing folders. Please verify that the intel fortran and aspen common files folder is part of the system PATH environment variable as shown in the highlights below:
The screen shot has two highlighted directory paths. One of the highlights is for the Aspen Common File... |
Problem Statement: In Shell & Tube Heat Exchanger Mechanical Design, why the rear head body flange thickness is “Zero” in the fabrication drawings? | Solution: Under Shell & Tube Mechanical, user may face the issue that the rear head flange thickness would be “Zero” on fabrication drawings.
The reason behind such non calculation of the flange thickness would be possibly that the mechanical design conditions specified like the design pressure is much higher than tha... |
Problem Statement: How do I log processes using procmon to help diagnose the problem if Aspen Plus is crashing? | Solution: A log of the processes from procmon can sometimes help diagnose crashes that are not reproducible or where files cannot be sent to Aspen Technology.
The attached zip contains the procmon binaries.
Execute the following steps on the user’s machine :
Launch procmon.exe
Set up filter as shown below :
Follow cu... |
Problem Statement: Datasheet Apps functionality in Aspen Plus | Solution: Aspen Basic Engineering's integration with Aspen Plus let you map simulation components, streams, and attributes directly to their counterparts in the extensive ABE data model library. Once mapped to simulation, you can use the data models to create complete and detailed datasheets supporting Basic Engineerin... |
Problem Statement: With multiple pens in the tag legend of a plot, each representing a different tag getting updated at different frequencies, an attempt to view the historical data in the Data Table will likely result in many gaps. It is difficult to identify the value for all the tags for a given timestamp. How can a... | Solution: You can use aggregate trend type to display data at a set frequency.
Tick all the check boxes on the left edge of the legend (you can easily do so by ticking the topmost check box in the legend column header). You then have access to the legend menu just above the item rows. Click the pencil icon to open the ... |
Problem Statement: While viewing trends in Aspen Mtell Agent Builder the filter sampling options ALARM_SAMPLING and INTERVAL_SAMPLING are available, how are these options different? | Solution: If Sample once per day and ALARM_SAMPLING are selected, the trend will show one data point per day, but an emphasis will be placed on the data points with alerts.
For example, if we had an hourly TDS that started at midnight and we selected Sample once per day and ALARM_SAMPLING when viewing a trend, the tren... |
Problem Statement: How do you supply Power to a block such as a Pump or Compressor? | Solution: Use a Work stream to supply a Power specification to Pump or Compressor block. You can also enter speed for a Compressor block. Even though Power is the rate at which Work is done or Work/time, Power is reported in the Work stream and as the Total and Net Work result for blocks such as the Pump (PUMP), the Co... |
Problem Statement: End user would like to schedule SQLplus script to be executed at regular interval on his own machine without having to save the query as a QueryDef or CompQueryDef record in Aspen InfoPlus.21 database to be scheduled. | Solution: The sqlplusx.exe command program can be used to execute SQLplus command on a remote node. The SQL command can be passed as a parameter in double quotes or redirect from a file. For example,
SQLplus command passed as a parameter.
sqlplusx /h=hostname select name from ATCAI
SQLplus command redirected... |
Problem Statement: If you place the CCF and MDL/MDL3 files in a folder which contains a double byte character in the folder name, you will see the following issues.
In V11.0 and above, you will not be able to open the CCF file with error messages shown error setting path and controller load error in DMCplus Build and ... | Solution: To workaround this issue, please place the CCF and MDL/MDL3 files in a folder which does not use double byte characters in the folder name. Double byte characters are not supported for APC ACO platformSolution.
Keywords: DMCplus, Build, Simulate, error, Double byte
References: None |
Problem Statement: Aspen Fidelis Pipe Production Probability to exceed does not go up to 100%, as in the example below | Solution: Probability to exceed will not get up to 100% in this case because the last bin in the histogram (the left most bar) is not zero. (The last bar is included in the calculation contrary to what it may appear as).
Another way to understand this is that 5% of the time the value is 224000, therefore the Probabili... |
Problem Statement: How do I reduce the Excel file size after it increased for no apparent reason?
Description: An Excel file may increase its size by a lot if by mistake, you move to the last Excel cell and enter something. Sometimes this can be caused by moving to that last row (by doing Ctrl-Down-Arrow too many time... | Solution: Go to the worksheet and take these steps (do not deviate from these steps):
Select cell A1
Ctrl-Down Arrow to go to last row, then select the row after that, the first row with no data -- select the row by clicking on the row header.
Ctrl-Shift-End to select from that row to the end of the used range (in this... |
Problem Statement: Special character on alphabetic character as ( ‘ ), i.e. á, on the variable description can lead to application problems after the controller is deployed.
This behavior can lead to issues as the status of the controller remains on start, no capture of any application mode change (Control, Calibrate) ... | Solution: . This problem can affect also during simulation step.
Further problems also have been reported when the CCF export feature is used on DMC3 Builder. if some special characters are found on the Calculation Comments or variables description the CCF file will fail to open and return an error showing that some c... |
Problem Statement: What items are considered for the Cylinder-hot side and Cylinder-cold side in a Shell & Tube Heat Exchanger? | Solution: These specifications can be found on the EDR Navigator under Input| Construction Specifications| Materials of Construction| Vessel Materials.
It must be considered where (shell or tubes) the hot fluid and cold fluid are located in the heat exchanger to assign the corresponding material of construction to eac... |
Problem Statement: What are the correct equations for the mechanical calculation of the stress in a Shell & Tube exchanger? | Solution: In a simulation file of Shell and Tube Mechanical V11.0, in Results - Code Calculations - Tubesheets/Expansion Joints in UHX-13.5.11 Step 11, the equations are in a wrong way.
The correct equations are:
Ss is the allowable stress for the shell material at Ts, the shell design temperature.
Sc is the allowabl... |
Problem Statement: How can I insert Unicode characters such as Russian, Japanese, Chinese, Korean into an Aspen InfoPlus.21 (IP21) database that can then be displayed in aspenOne Process Explorer or Aspen Process Explorer? | Solution: Note: Please see article What is 'the Code Page' option in the Aspen DA for IP.21 service? before continuing. You will have to set the Code Page of the Aspen DA for IP.21 Service in ADSA in order to insert your Unicode characters and have them recorded correctly.
How to insert Unicode characters?
In this exam... |
Problem Statement: One can use Aspen Simulation Workbook to facilitate the management of data (e.g. to collect data from historian in Excel, then push those data to the simulation). For equation oriented run mode, one may need also to change the configuration of the simulation (enable or disable connections, spec group... | Solution: The example attached. The following VBA code is used. The trick is to use the so-called backdoor mechanism, which is essentially typing the Text string variable into the command prompt of the HYSYS EO simulation engine. The path may change in other versions, but it can be found by using the recording macro in... |
Problem Statement: How to Enable Greenhouse Emissions Calculations in Aspen Hysys. | Solution: To enable greenhouse emissions calculations in aspen hysys, open the process utility manager, and then click greenhouse gas emissions preferences.
In the greenhouse gas emissions view, check calculate CO2 emissions.
Enter specifications as shown below:
Option Description
CO2 Emission Factor Data Source EU ... |
Problem Statement: Do you need an Aspen Polymers Plus license to use NRTL-SAC in Aspen Plus or Aspen Properties? | Solution: Both NRTL-SAC and eNRTL-SAC use the polymer segment concept and originally needed an Aspen Polymer Plus license to use NRTL-SAC or eNRTL-SAC in Aspen Plus. Now, as long as polymers, oligomers, or segments are not in the simulation, an Aspen Polymers license is not needed.
Keywords: None
References: None |
Problem Statement: Why does Administration tool fail to connect to server, but other Aspen Basic Engineering applications connect successfully? | Solution: In Aspen Basic Engineering (ABE) V11 and V12, the administration tool uses DCOM protocol for communicating with the server. The other ABE applications use TCP/IP protocol. One exception is if users have installed ABE V11 Cumulative Patch 1 Emergency Patch 17, then the Drawing Editor can be configured to use D... |
Problem Statement: This Knowledge Base article answers the following question:
Is it possible to create multiple profile records for one Aspen InfoPlus.21 tag? | Solution: There can be multiple profiles created against the same tag, they just need to have either different triggers, unit, or context.
The best approach would be to have different start/end time triggers based on when the user wanted to profile the different times of the process. They could also have different cont... |
Problem Statement: How to import Aspen HYSYS Petroleum assay data into Aspen Plus? | Solution: In HYSYS, to export petroleum assays to input files:
1. Click the Petroleum Assays node to open the Petroleum Assays form.
2. On the Petroleum Assays form, select the desired assay(s) in the Assays Summary table.
3. At the bottom of the form, click Export | Export to Aspen Plus Inp File.
Note: If any of the... |
Problem Statement: DCOM (Distributed Component Object Model) is an addition to COM that facilitates the transparent distribution of objects over networks and over the Internet. It dynamically allocates one port per process.
When connecting applications across a firewall that use DCOM, there are Firewall and Registry S... | Solution: In order for DCOM to work effectively across a firewall, the System Administrator needs to decide how many ports should be allocated to DCOM processes, which is equivalent to the number of simultaneous DCOM processes through the firewall. The System Administrator must open all of the UDP and TCP ports corresp... |
Problem Statement: Search in aspenONE Process Explorer (A1PE) and also aspenONE Process Explorer Admin returns error code 500
Directly opening the Solr control panel (http://<Aspen Search Server>:8080/solr/) returns error HTTP Status 500 – Internal Server Error SolrCore 'collection1' is not available due to init failur... | Solution: UPDATE - Starting in aspenONE V12 there are now 2 independent services relating to Aspen Search. These are:
Apache Tomcat 9.0 Tomcat9
SolrWindowsService
In at least one instance this problem was corrected by simply starting the SolrWindowsService service (which, although set to be started automa... |
Problem Statement: Shell & Tube Exchanger in EDR is capable of design and simulate shell & tube heat exchangers in multiple shells either in series or parallel. However, there could be different designs based on different shell arrangement setups. How to define different arrangements in Shell & Tube Exchanger program f... | Solution: Multiple shells arrangement mainly divided into 2 types, shell in parallel or series. Each type could also have different arrangements such as co-current or counter-current flow between shellside and tubeside flows.
Shell in Parallel:
For shell in parallel, the user can have 2 different arrangements if E-she... |
Problem Statement: There are some conventional components with not defined RON and MON numbers in the databank and the users should specify those missing parameters since Aspen Plus calculates the octane number for a blending considering only the contribution of the conventional components with a RON and MON number def... | Solution: This video covers the description regarding accurately specifying the RON and MON property in the stream results. As well as the Octane Number blending calculation and an example simulation.
Keywords: ROC-NO, MOC-NO, Property Curve, Assay/Blend
References: None |
Problem Statement: Users may notice that once they deploy an APC controller online, the gain for a ramp variable has a different value on the Desktop tool (DMCplus Model or DMC3 Builder) than on the PCWS web page Models view. What is causing this difference? | Solution: The gains are not actually different, it is only a difference in display between the web page of PCWS and the desktop tools like DMC3 Builder, which is intentional by design. DMC3 Builder is reporting the gain as per minute, which you can verify by looking at a plot of the step response model. In contrast, th... |
Problem Statement: The Move Suppression is a unitless number and can often feel arbitrary when tuning it. Therefore, it is valuable to understand the relationships between move suppression and scaling parameters of gain and operator range. So, what can you expect to see in Simulation when the gain and operator range ar... | Solution: A simulation test was conducted for a 1 MV x 1 CV model with a first order transfer function, a gain of 1, time constant of 10 min, over a range of move suppressions, then plotted for just the first control move. The gain, operator range, and maximum move were varied. For each simulation, the MV started at ze... |
Problem Statement: What would I need to perform Spyro simulations with the new version of Olefins Regression Calculator? | Solution: The Pyrotex SPYRO engine used by Aspen Olefins Regression Calculator (AORC) to perform Spyro simulations has been updated to SRTO version 7, which is also 64-bit. If you intend to perform Spyro simulations with the new version of AORC, you will need to obtain a new SRTO license file. For more information, p... |
Problem Statement: How can I tell what version of DMCplus a ccf was last modified? | Solution: BLDVERS parameter can be used. Find below a chart including the BDLVERS parameter, DMCplus Build internal version and the AspenONE release version.
V8.0 release 13.0.0 13
V8.0 CP3 13.0.3.1021 13
V8.4 release 14.0.1 14
V8.4 CP2 14.0.2.1004 14
V8.5 release 14.1.1 14.1
V8.5 CP5 14.1.5.1012 14.1
V8.7 release 1... |
Problem Statement: How does one use the Hansen method to predict activity coefficients? | Solution: Hansen is a solubility parameter model and is commonly used in the solvent selection process. It is based on the regularSolution theory and Hansen solubility parameters. This model has no binary parameters and its application merely follows an empirical guide like dissolves like.
Theory
Hansen is a solubility... |
Problem Statement: How do I know whether a mixture is Vapor-Liquid (VL) or Vapor – Liquid - Liquid (VLL)? Is there any option available in Aspen Plus to check? | Solution: Generally, in Aspen Plus, the valid phases are Vapor-Liquid. If the mixture has two liquid phases, the flash results will be wrong if the valid phases are set to Vapor-Liquid. In order to avoid these incorrect results, there are some options available on the Setup | Calculation Options sheet in the “Phase equ... |
Problem Statement: aspenONE Process Explorer Admin showing A connection with the server could not be established(Error code:500) after upgrading to V12.
Another symptom is that solr page(http://localhost:8983/solr) is not reachable.
It was running before upgradation. What could be the reason for this behavior？ | Solution: Solr is independent from Tomcat in V12. It is controlled by a new service called SolrWindowsService
1- Please make sure that tomcat service is running.
2- Please make sure that SolrWindowsService service is running.
3- If SolrWindowsService service cannot be started, please check the logs at C:\Program ... |
Problem Statement: How can we transfer Equipment form OptiPlant to S3D? | Solution: OptiPlant generates an XML file that any user can import into S3D. Please follow the below mentioned steps to generate the XML file for Equipment:
Go to Deliverables >> Intergraph Smart 3D
A window will open, from that window go to Equipment tab
Select the required equipment for which the XML file needs to be... |
Problem Statement: How can we transfer Structures form OptiPlant to S3D? | Solution: OptiPlant generates a CIS/2 or STP file that can be imported into S3D. Please follow the below mentioned steps to generate the STP file for Structures:
Go to Deliverables >> Intergraph Smart 3D
A window will open, from that window go to Structure tab
Select the required Structures
Finally, c... |
Problem Statement: How can we transfer Piping form OptiPlant to S3D? | Solution: OptiPlant generates an XML file that can be imported into S3D. Please follow the below mentioned steps to generate the XML file for Piping:
Go to Deliverables >> Intergraph Smart 3D
A window will open, from that window go to Piping tab
Select the required line ID's
Finally, click on t... |
Problem Statement: Is there a list of OptiPlant interfaces? | Solution: OptiPlant shares interfaces with various tools. The list is as follows:
Key Words:
interface
Keywords: None
References: None |
Problem Statement: Is AI Training available in Aspen HYSYS Dynamics mode? | Solution: AI Training is not available in Dynamics mode.
Keywords: AI Training, Dynamics, etc.
References: None |
Problem Statement: Where can I get the AI Training user guide & sample examples in Aspen HYSYS V12.1? | Solution: Users can get the Aspen HYSYS V12.1 Help menu topic AI Training for a more detailed workflow/step by step guide to using AI Training in Aspen HYSYS V12.1
AI Training sample examples are available at the below path or can be accessed from Aspen HYSYS V12.1, Resources menu, Examples.
C:\Program Files\AspenTech... |
Problem Statement: Choked flow is a fluid dynamic condition where a flowing fluid at a given pressure and temperature passes through a constriction (such as the throat of a convergent-divergent nozzle or a valve in a pipe) into a lower pressure environment and the fluid velocity increases.
Aspen Flare has the optio... | Solution: If selected, the program will check for choking at each pipe outlet. If the program determines that the pipe outlet is choked (i.e. Mach number = 1), choking pressure will be calculated at the pipe outlet conditions. The pipe outlet pressure will be set to this choking pressure. Note that the choking can occu... |
Problem Statement: Is if possible to set the minimum values for the displayed flows and fractions in streams ?
Is it possible to have flows or fractions that are very, very small for a nuclear reactor? It seems that at some point the small fractions are clipped to a value of zero.
Alternatively, is it possible to remov... | Solution: We drop trace components of the inlets (not the outlets) based on Minimum Flow (PACK-FLOW) and Minimum Fraction (PACK-FRAC) on the Setup | Calculation Options | Limits sheet. The default values are a mole flow of 1e-15 kmol/sec and a mole fraction of 1e-15. This value is global for the entire simulation and a... |
Problem Statement: How to configure email alerts for license denials or license expiration? | Solution: To enable email alerts, users need to create a configuration file with information on the license strings from the license file. The configuration should be “lservrc.cnf”, is a general-purpose configuration file and shall reside on the same directory as the license file.
Defining Alerts:
Each alert type shou... |
Problem Statement: Is there any limitation if we import Equipment into S3D from OptiPlant? | Solution: There are a few limitations for OptiPlant to S3D interface for Equipment:
Ellipse or elliptical shape cannot be imported into S3D as an intelligently because of limitation of S3D. User can replace sphere with semielliptical head as per requirement.
Pyramid equipment of OptiPlant cannot be imported into S3D
K... |
Problem Statement: Is there any limitation if we import piping into S3D from OptiPlant? | Solution: There are a few limitations for OptiPlant to S3D interface for piping:
Orifice component from OptiPlant cannot be imported into S3D
In S3D, header and branch are considered as one system whereas in OptiPlant it is different so if header and branch from OptiPlant is imported in S3D it creates one extra Pipe Ru... |
Problem Statement: How can we transfer Equipment form S3D to OptiPlant? | Solution: OptiPlant reads equipment in excel format. The user has to export equipment form S3D into excel format and that excel file can be imported into OptiPlant. There are few key points that needs to be considered while exporting the equipment from S3D:
The equipment list format from S3D should be the same as OptiP... |
Problem Statement: How can we transfer Structures form S3D to OptiPlant? | Solution: OptiPlant can read STP or CIS/2 files extracted from S3D. If the user export Structures from S3D into STP format that can be read into OptiPlant by going to File >> CIS/2 Button. However, there are few pre-requisites. Users have to update the data files for structure member sizes and place them to the working... |
Problem Statement: How can we transfer Piping form S3D to OptiPlant? | Solution: OptiPlant can read PCF files extracted from S3D. If the user export piping from S3D into PCF format that can be read into OptiPlant by going to File >> PCF button. However, there are few pre-requisites. Users have to update two data files, which are as follows:
PCFInputConfiguration.csv
PipeListInput.csv
N... |
Problem Statement: You may get BadSecurityChecksFailed 'Error received from remote host: Could not verify security on OpenSecureChannel request.' while using Aspen OPC UA Explorer connect to OPC UA server.
This article provides you with an example using Aspen OPC UA Explorer connect to IP21 OPC UA server. | Solution: You will need to trust the certificate.
1. Launch UA Configuration Tool
2. Click on Find and browse to C:\Program Files\AspenTech\AspenOPCUAExplorer | open “AspenTech.UA.Client.AC.OPCUAExplorer” | click on ok
3. Click on Find and browse to C:\Program Files\AspenTech\InfoPlus.21\db21\code | Open “IP21OpcUAS... |
Problem Statement: How do I change default SQL Server port 1433 connecting to Aspen Mtell server? | Solution: This article shows how to change the port that Aspen Mtell uses to connect to the SQL server. SQL Server uses TCP port 1433 by default that can be changed to other available ports. If SQL has been configured to use a non-default port, this article shows how Mtell can be configured to use the SQL Server non-de... |
Problem Statement: Since QueryDef records are not automatically saved as .sql file it is not possible to open these queries on text editor files and simply update its information using these text editors. Two queries were written to solve that issue. | Solution: In order to apply thatSolution, it is necessary to find out where your .sql queries are usually saved. Here it is being considered that they are saved in the default group200 path. For that, the user can create a new .sql file and “Save as” or the user could search for .sql files on their search magnifying gl... |
Problem Statement: There may be a situation in which you want to use a scripting language other than VBScript to call on the Aspen SQLplus ODBC driver. This | Solution: aims to provide an example of how Python can be used to interface with Aspen SQLplus ODBC driver through the use of PyPyODBC which is a pure Python ODBC interface module based on ctypes.Solution
There are a few points to note.
1. Knowledge of Python language is a MUST.
2. Usage of Python 2.7.3 as the ... |
Problem Statement: A Safety/relief valve is being specified for a Pipe bulk, but the results for estimate show different diameter, length, and quantities. Why is this?
User specified values:
Estimate results: | Solution: The safety/relief valve has a maximum pipe diameter value of 8 [200 MM], thus if the pipe diameter specified exceeds this maximum limit, ACCE will automatically adjust the system configuration to fit within the software ranges.
To to prevent this from happening, the user must specify pipe diameter values tha... |
Problem Statement: The Icarus_User 120 database is not being successfully connected, thus the reporter does not work. The following error message is displayed when evaluating the project: | Solution: To solve the connectivity error, the database needs to be recreated. Follow the steps below to do so:
Close all Economics V12 applications
Delete all *.mdf and *.ldf files from the cache directory of the project (path: C:\Users\TIRADOCA\Documents\AspenTech\My Economic Evaluation V12.0 Files\Cached Project)
De... |
Problem Statement: Why is there a difference between the calculated properties of a defined stream and a virtual stream if apparently all base conditions are transferred correctly? | Solution: This problem happens when a petroleum assay is being used in the stream from which the virtual stream is created. A virtual stream should never be used simultaneously with a petroleum assay because properties are not transferred correctly.
As the properties are not transferred exactly as they are in the orig... |
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